Energy Management 7SR11 and 7SR12 Argus Overcurrent Relays Reyrolle Protection Devices
2 Siemens Protection Devices Limited
The 7SR11 & 7SR12 are overcurrent protection relaysdeveloped to enhance the Argus family of products by providing a familiar product using the latest generation of hardware technology. The 7SR11provides overcurrent and earth fault protection, the 7SR12 comes with additional voltage inputs providing directional protection. Both relays are available in single and four pole variants. Housed in a 4U high, size E4 or E6 (Optional IEC61850 mod-el) cases, these relays provide protection, monitoring, in-strumentation and metering with integrated input and out-put logic, data logging & fault reports. Communication ac-cess to the relay functionality is via a front USB port for local PC connection, a rear electrical RS485 port for remote con-nection & optional IEC61850 communication through two rear Ethernet ports (Electrical or Optical).
Protection37 Undercurrent46BC Broken Conductor / Load Unbalance46NPS Negative Phase Sequence Overcurrent49 Thermal Overload50 Instantaneous Overcurrent50G/N/SEF Instantaneous Earth Fault50AFD Arc Flash Detection (6 zones)50BF Circuit Breaker Fail51 Time Delayed Overcurrent51G/N/SEF Time Delayed Measured/Derived/Sensitive EF64H High Impedance REF27/59 Under/Over Voltage47 Negative Phase Sequence Voltage51V Voltage Controlled Overcurrent59N Neutral Voltage Displacement67/50 Directional Instantaneous Overcurrent67/50G/N Directional Instantaneous Earth Fault67/51 Directional Time Delayed Overcurrent67/51G/N Directional Time Delayed Earth Fault32 Directional Power32S Directional Sensitive Power55 Power Factor81HBL2 Inrush Detector81 Under/Over Frequency
Line Check/Switch onto Fault
Supervision
60CTS CT Supervision74T/CCS Trip & Close Circuit Supervision 60VTS VT Supervision
Control79 Auto Reclose86 Lockout
CB Control
Features
Cold Load SettingsFour Settings GroupsPassword Protection – 2 levelsUser Programmable LogicSelf MonitoringCircuit Breaker Trip and Maintenance CounterTrip Timers
20 Character x 4 Line Backlit LCDMenu Navigation Keys9 User Programmable Tri-colour LEDsUser Language Configuration
Primary/Secondary Current Phases and EarthDirectionPrimary/Secondary Line and Phase VoltagesApparent Power and Power FactorReal and Reactive PowerW Hr & VAr Hr Forward and ReverseHistorical Demand RecordPositive Phase Sequence (PPS) Voltage & CurrentNegative Phase Sequence (NPS) Voltage & CurrentZero Phase Sequence (ZPS) VoltageFrequencyDirectionBinary Input/Output statusTrip circuit healthy/failureTime and dateStartersFault recordsEvent recordsEnergy Circuit breaker trip countersI2t summation for contact wear
1 CT 3 Binary Inputs 5 Binary Outputs4 CT 3 Binary Inputs 5 Binary Outputs4 CT 6 Binary Inputs 8 Binary Outputs4 CT 4 Bin.In. 8 Bin.Out. (segregated rear terminals)1 CT 3 VT 3 Binary Inputs 5 Binary Outputs4 CT 3 VT 3 Binary Inputs 5 Binary Outputs4 CT 3 VT 6 Binary Inputs 8 Binary Outputs4 CT 3 VT 4 Bin. In. 8 Bin.Out. (segregated rear terminals)
7SR11 and 7SR12 ArgusOvercurrent Relays
Description
User Interface
Hardware
Monitoring Functions
Function Overview
Siemens Protection Devices Limited 3
Standard Communication Ports
Front USB port + Rear RS485 port Additional Optional Communication Ports
2x Electrical RJ45 Ethernet ports 2x LC Fibre Optic Ethernet ports Standard Protocols
IEC60870-5-103, DNP3.0 or Modbus RTU User Selectable with programmable data points Optional Protocols
IEC61850 (E6 Case) Ethernet Redundancy Protocols: Standard in all IEC61850 models: PRP (Parallel Redundancy Protocol) RSTP (Rapid Spanning Tree Protocol) HSR (High-availability Seamless Redundancy) Data
Event Records – User Configurable Fault Records Waveform Records Measurands Commands Time Synchronism Viewing and Changing Settings
The Argus is a numerical overcurrent protection relay intended for use on distribution and industrial networks. It provides a highly comprehensive functional software package with a range of integral application functions aimed at reducing installation, wiring and engineering time. An extensive range of metered values can be viewed on the front LCD or at a remote point via the communication channel. The integrated control feature allows operation of a single circuit breaker and monitoring of its trip and close circuits (except 7SR1102-1*A12-*AA0 models).
27 Undervoltage
32 Directional Power
32S Directional Sensitive Power
37 Undercurrent
46BC Broken Conductor / Load Unbalance
46NPSNegative Phase Sequence Overcurrent
47 Negative Phase Sequence Voltage
49 Thermal Overload
50 Instantaneous Overcurrent
50G Measured Instantaneous Earth Fault
50SEFMeasured Instantaneous Sensitive Earth Fault
50N Derived Instantaneous Earth Fault
50AFD Arc Flash Detection
50BF CB Failure
51 Time Delayed Overcurrent
51G Measured Time Delayed Earth Fault
51SEFMeasured Time Delayed Sensitive Earth Fault
51N Derived Time Delayed Earth Fault55 Power Factor
59 Overvoltage
59N Neutral Voltage Displacement
64HHigh Impedance Restricted Earth Fault
67 Directional Overcurrent
67G Directional Measured Earth Fault
67SEF Directional Sensitive Earth Fault
67N Directional Derived Earth Fault
81HBL Inrush Detector
81 Under/Over Frequency
CONTROL / MONITOR
51c Cold Load - Phase Only
60CTS CT Supervision
60VTS VT Supervision
74T/CCS
Trip & Close Circuit Supervision
79 Autoreclose
86 Lockout
Line Check/SOTF
Key - - Included as standard- Ordering option
Application
Function Matrix Data Storage and Communication
4 Siemens Protection Devices Limited
7SR11
50G(x2)
51G(x2)
74T/CCS
81HBL2G
I(IG/ISEF)
50 SEF(x2)
51 SEF(x2)
64H
86
37(x2)
Fig 1. Single Pole Overcurrent Relay
7SR1150
(x2)51
(x2)
50G(x2)
51G(x2)
50BF
50N(x2)
51N(x2)
50(x2)
50BF
50(x2)
50BF
74T/CCS
51(x2)
51(x2)
I4(IG)
IL1
(IA)
IL2
(IB)
IL3
(IC)
60 CTS
60 CTS
60 CTS
64H50BF
3BI/5BO
86
No Control functions
Fig 2. Four Pole Overcurrent Relay Version A software
7SR1137
(x2)49
50(x2)
51(x2)
50G(x2)
51G(x2)
50BF
50N(x2)
51N(x2)
46BC
46NPS(x2)
81HBL2
37(x2)
4950
(x2)50BF
81HBL2
37(x2)
4950
(x2)50BF
81HBL2
74T/CCS
51(x2)
51(x2)
I4(IG/ISEF)
IL1
(IA)
IL2
(IB)
IL3
(IC)
60 CTS
60 CTS
60 CTS
50 SEF (x2)
51 SEF (x2)
64H50BF
79 Optional Version D Software
51c
51c
51c
86
37(x2)
50 AFD
50 AFD
50 AFD
Fig 3 Four Pole Overcurrent Relay Version C Software
V1
V2
V3
67/50G (x4)
67/51G (x4)
64H81
HBL2
67/50SEF (x4)
67/51SEF (x4)
59N (x2)
27/59 (x4)
27/59 (x4)
27/59 (x4)
7SR12
I(IG/ISEF)
81(x4)
8674
T/CCS
37 (x2)
Fig 4. Single Pole Directional Relay
7SR12
64H
46BC
46NPS(x2)
37 (x2)
4950BF
V1
V2
V3
37 (x2)
4950BF
37 (x2)
4950BF
60CTS
74T/CCS
67/50
(x4)
67/51
(x4)
67/50N(x4)
67/50
(x4)
67/50
(x4)
67/51
(x4)
67/51
(x4)
67/51N(x4)
67/50G(x4)
67/51G(x4)
2759
(x4)
2759
(x4)
2759
(x4)
59N (x2)
47 (x2)
79 Optional
50BF
50BF
37 (x2)
81HBL2
81HBL2
81HBL2
51V
51V
51V
67/50SEF (x4)
67/51SEF (x4)
50 AFD
50 AFD
50 AFD
81(x4)
86
IL1
(IA)
IL2
(IB)
IL3
(IC)
I4(IG/
SEF)
32S (x2)
60VTS
51c
51c
51c
32 (x2)
32 (x2)
32 (x2)
55 (x2)
55 (x2)
55 (x2)
Fig 5. Four Pole Directional Overcurrent Relay
Notes1. Items shown dotted are only available in some
models; please refer to the Ordering Information Section.
2. The use of some functions are mutually exclusive
7SR12 Functional Diagrams 7SR11 Functional Diagrams
Siemens Protection Devices Limited 5
27/59 Under/Over Voltage
Each element has settings for pickup level, drop-off level and Definite Time Lag (DTL) delays. Operates if voltage exceeds setting for duration of delay. 32 Power
Each element has settings for pickup level, Definite Time Lag (DTL) delay and Direction. Each element can be set as Under or Over power, to operate from Apparent , Real or Reactive power and can be set for any phase or all three phases. 32S Sensitive Power This is provided in 4 pole SEF relays and provides elements operated by single phase measured current in the ISEF input. Each element has settings for pickup level, Definite Time Lag (DTL) delay and Direction. Each element can be set as Under or Over power, to operate from Apparent, Real or Reactive power. 37 Undercurrent
Each element has settings for pickup level and Definite Time Lag (DTL) delays. Operates if current falls below setting for duration of delay. 46BC Phase Unbalance/Broken Conductor
Element has settings for pickup level and DTL delay. With the circuit breaker closed, if the NPS:PPS current ratio is above setting this could be due to a broken conductor. 46NPS Negative Phase Sequence Overcurrent
Each element has user settings for pickup level and IDMTL or DTL delay, operates if NPS current exceeds setting and delay. NPS current elements can be used to detect unbalances on the system or remote earth faults when a delta-star transformer is in circuit. 47 Negative Phase Sequence Voltage Each element has settings for pickup level and Definite Time Lag (DTL) delays. Operates if NPS voltage exceeds setting for duration of delay. 49 Thermal Overload
The thermal algorithm calculates the thermal states from the measured currents and can be applied to lines, cables and transformers. Alarm outputs are given for thermal overload and thermal capacity. 50BF Circuit Breaker Fail
The circuit breaker fail function may be triggered from an internal trip signal or from a binary input. Line currents and earth currents are monitored following a trip signal and an output is issued if any current is still detected, above setting, after a specified time interval. Alternatively, if the trip is from a mechanical protection the circuit breaker position can be used to determine a failure. A second time delay is available to enable another stage to be utilized if required. An input is also available to bypass the time delays when the circuit breaker is known to be faulty. 51c Cold Load Pickup
If a circuit breaker is closed onto a ‘cold’ load, i.e. one that has not been powered for a prolonged period, this can
impose a higher than normal load-current demand on the system which could exceed normal settings. These conditions can exist for an extended period and must not be interpreted as a fault. To allow optimum setting levels to be applied for normal operation, the cold load pickup feature will apply alternative current settings for a limited period. The feature resets when either the circuit breaker has been closed for a settable period, or if the current has reduced beneath a set level for a user set period. 50/51 Phase Fault
50 INST/DTL and 51 IDMTL/DTL elements provide overcurrent protection, each with independent settings for pickup current, time-multiplier (51) and time-delays. User can select IEC or ANSI time current characteristics. The IDMT stage has a user programmable reset characteristic, either DTL or shaped current ~ time reset characteristic, to improve grading with electromechanical protection. 50G/51G/50N/51N Earth Fault/Sensitive Earth Fault
Two earth fault measurement modes are available. One mode directly measures the earth current from an independent CT, or the residual connection of the 3 line CTs. This input can be ordered as either earth fault or sensitive earth fault (50G/51G). The second mode derives the earth current internally from the 3 phase CT inputs to give earth fault (50N/51N). 50 INST/DTL and 51 IDMTL/DTL elements provide overcurrent protection, each with independent settings for pickup current, time-multiplier (51) and time-delays. User can select IEC or ANSI time current characteristics. The IDMT stage has a user programmable reset characteristic either DTL or shaped current ~ time reset characteristic to improve grading with electromechanical protection. The directional SEF element is also suitable for use on compensated networks.
0.1
1
10
100
1000
1 10 100Current (multiples of setting)
Time(sec)
2 3 4 5 6 8 20 30 40 50 60 80
Long Time Inverse
Normal Inverse
Very Inverse
Extremely Inverse
Fig 6. IEC Overcurrent Curves
Description of Functionality
6 Siemens Protection Devices Limited
0.1
1
10
100
1000
1 10 100Current (multiples of setting)
Time(sec)
2 3 4 5 6 8 20 30 40 50 60 80
Moderately Inverse
Extremely Inverse
Very Inverse
Fig 7. ANSI Overcurrent Curves 51V Voltage Controlled Overcurrent Each phase shaped overcurrent element can be independently controlled by the level of measured input voltage. For applied voltages above setting the 51-n element operates in accordance with its current setting but for voltages below the setting a multiplier is applied to reduce the 51-n pick up current setting. 50AFD Arc Flash Detector
The 7SR1 relays can be used with the 7XG31 ReyArc range of Arc Flash Detection devices. Arc fault protection is a tech-nique employed for the fast clearance of arcing faults on busbars, within metal clad switchgear & associated cable boxes. The arc is detected using an optical sensor & the sig-nal input to a protection device which also monitors the load current on the system. A trip signal can be achieved in less than 10 ms using arc detection only or within 20 ms when using overcurrent check. 55 Power Factor
Each element has settings for Under or Over Power Factor pickup level, Definite Time Lag (DTL) delay and Lead/Lag Direction. Each can also be set for any phase or all three phases operation. 59N Neutral Overvoltage
Neutral overvoltage can be used to detect earth faults in high impedance earthed or isolated systems. Operates if the neutral voltage exceeds setting for duration of delay. 60CTS CT Supervision The relay has two methods of CT supervision.. The 7SR11 monitors each phase current input and operates if any one
or two inputs fall below the setting. The 7SR12 has the above method and an addition method that considers the presence of negative phase sequence current, without an equivalent level of negative phase sequence voltage, for a user set time as a CT failure. Both element types have user operate and delay settings. 60VTS VT Supervision
The VT supervision uses a combination of negative phase sequence voltage and negative phase sequence current to detect a VT fuse failure. This condition may be alarmed or used to inhibit voltage dependent functions. Element has user operate and delay settings. 64H Restricted Earth Fault The measured earth fault input may be used in a 64H high impedance restricted earth fault scheme to provide sensitive high speed unit protection. A calculation is required to determine the values of the external series stabilising resistor and non-linear shunt resistor which can be ordered separately. 67/67N Directional Control Phase, earth and sensitive earth fault elements can be directionalised. Each element can be user set to Forward, Reverse, or Non-directional. Directional Phase Fault elements are polarised from quadrature voltage. Derived earth fault elements can be user set to be polarised from residual voltage or negative phase sequence voltage. Measured earth fault elements are polarized from Vo. 74T/CCS Trip & Close Circuit Supervision
The trip or close circuit(s) can be monitored via binary inputs. Trip circuit failure raises an HMI alarm and output(s). 81HBL2 Inrush Restraint
Where second harmonic current is detected (i.e. during transformer energisation) user selectable elements can be blocked and an alarm given. 81 Under/Overfrequency Each element has settings for pickup level, drop-off level and Definite Time Lag (DTL) delays. Operates if frequency ex-ceeds setting for duration of delay. Typically applied in load shedding schemes. Standard Version – Plus 79 Auto-Reclose
A high proportion of faults on an overhead line network are transient and can be cleared quickly by high speed tripping followed by an automated circuit breaker reclose sequence. The function provides independent phase fault and earth fault / sensitive earth fault sequences of up to 5 trip i.e. 4 reclose attempts before lockout. An auto-reclose sequence can be user set to be initiated from internal protection operation or via binary input from an external protection. Programmable Logic
The user can map binary inputs, protection elements, LEDs and binary outputs together in a logical scheme. Up to 4 logic equations can be defined using standard logic functions e.g. Timers, AND/OR gates, Inverters and Counters to provide the user required functionality. Each logic equation output can be used for alarm & indication and/or tripping.
Siemens Protection Devices Limited 7
Virtual Inputs/Outputs
There are 8 virtual inputs/outputs to provide internal logical states to assist in the application of the functions. Each virtual I/O can be assigned in the same way as a physical I/O.
Circuit Breaker MaintenanceTwo circuit breaker operations counters are provided to assist with maintenance scheduling. The maintenance counter records the overall number of operations and the delta counter records the number of operations since the last reset. An I2t summation counter provides a measure of the contact wear indicating the total energy interrupted by the circuit breaker contacts.Each counter has a user set target operations count which, when reached, can be mapped to raise alarms/ binary outputs. A CB Trip Time meter is also available, which measures the time between the trip or open command being issued and the auxiliary contacts changing state.
Control ModeThe relay has a control menu with access to commonly used command operations (except 7SR1102-1*A12-*AA0 models). Access to the control commands is restricted by a 4 character control function password. Each command requires a select then execute operation, if the execute operation is not performed within a time window the command is aborted. The following control functions are available:CB OperationAuto Reclose In/OutAuto Reclose Trip & RecloseAuto Reclose Trip & LockoutSEF In/OutInst Prot In/OutHot Line Working In/Out
Fig 8. Example of Control Function View
Sequence of event records Up to 1000 events are stored and time tagged to 1ms resolution.
Fault Records
The last 10 fault records are displayed on the relay fascia and are also available through the communication interface, with time and date of trip, measured quantities and type of fault. (5 records for 7SR1102-1*A12-*AA0 versions).
Waveform recorder
The waveform recorder stores analogue data for all poles and the states of protection functions, binary inputs, LEDs and binary outputs with user settable pre & post trigger data. A record can be triggered from protection function, binary input or via data communications. 10 records of 1 second duration are stored. (5 records for 7SR1102-1*A12-*AA0 versions).
Demand MeteringA record of demand is available. The demand minimum, maximum and average values for currents, frequency and if applicable, voltages and real, reactive and apparent power, over a user selectable period of time, is displayed and available via data communications. Typically this is set as a rolling value for the last 24 hours.
Real Time Clock
The time and date can be set and are maintained while the relay is de-energised by a back up storage capacitor. The time can be synchronized from a binary input pulse or the data communication channel.
The relay offers a USB serial port as standard on the front of all units. All of the relays functions can be set on a PC using Reydisp Evolution via the USB port. The connection is made with a USB cable and operates with a ‘plug and play’ connection, so no pre-setting of the relay is required.The front port can be switched off or set to use either the DNP3.0, MODBUS-RTU, IEC60870-5-103 and ASCII protocols for testing purposes.A rear RS485 electrical connection is available on all units for system interface connections. An internal terminating resistor is provided, which can be connected into the circuit by adding a wire loop between the relevant terminals.
To Control System
14161820
RS485 Screened twisted pair Rear terminals
141618
RS485 Screened twisted pair
Ext Wire loop to Include line
terminating Res
Fig 9. Typical RS485 connection
The rear RS485 can be user selected to be OFF, IEC60870-5-103, MODBUS RTU or DNP3.0 protocol.
IEC 61850
IEC61850 communication is available through an optional EN100 communication module. The EN100 Module can be ordered with either 2x Electrical RJ45 or 2x Fibre optic LC Ethernet ports.Information on IEC61850 functionality can be found in the following 7SR11/12 documents:
Model Implementation Conformance Statement (MICS)
Protocol Implementation (PICS,PIXIT & TICS)
Serial Communications
Data Acquisition -Via Communication Interface
8 Siemens Protection Devices Limited
Reydisp Evolution is a Windows based software tool, providing the means for the user to apply settings, interrogate settings and retrieve events and disturbance waveforms from the device and is common to the entire range of Reyrolle protection relays.
Fig 10. Typical Reydisp Evolution Screenshot
Language Editor
The Language editor software gives the user the ability to customize the text displayed in the relays, Menu structure and instrumentation views. The tool allows a language file to be created and transferred to the relay also containing Western European characters.
Fig 11. Typical Language Editor Screenshot
Communications Editor
To facilitate easier interfacing to a substation the relays default Protocol configuration may be modified using the communication editor software tool.The communication editor is a PC based software package provided within the Reydisp software suite which allows modification of the IEC60870-5-103, DNP 3.0 and MODBUS Protocols.
Fig 12. Typical Communications Editor Screenshot
Reydisp Evolution
Siemens Protection Devices Limited 9
Reydisp Manager provides the functionality of Reydisp Evolution and also provides project management of multiple devices to allow engineering of IEC61850 projects. It also provides access to user logic within the devices via an easy to use graphical interface.
Fig 3. Typical Reydisp Manager screenshots
Reydisp Manager
10 Siemens Protection Devices Limited
The relay is housed in a 4U high, size E4 or E6 (Optional IEC61850 model) case with a removable clear fascia cover. The fascia cover can be ordered with or without two push buttons to allow the user to view the settings and instruments without removing the cover.Two handles are provided to allow the relay to be withdrawn from its case, contacts in the case ensure that the CT circuits and normally closed contacts remain short circuited when the relay is withdrawn. The rear terminal blocks comprise M4 female terminals for ring crimp wire connections, to provide a secure and reliable termination.
Fig 13. Rear view of relay (E4 Case)
Fig 14. Rear view of relay with 2x LC Fibre Optic ports (E6 Case with IEC61850)
Fig 15. Front view of relay (E4 Case with push buttons)
Fig 16. Front view of relay (E6 Case with IEC61850
Construction
Siemens Protection Devices Limited 11
User Function
Label
Large LCD
Multi-coloured
LED’sProgrammable
from fascia
Fig 17. User Interface The operator interface is designed to provide a user friendly method of controlling, viewing menus, entering settings and retrieving data from the relay. Five buttons are provided for navigation around the menu structure. LCD
A 4 line by 20 character liquid crystal display with power save operation indicates the relay identifier, settings, instrumentation, fault data and control commands. Up to 6 user programmable general alarms can be configured to display your own indications on the LCD. LEDs A green steadily illuminated LED indicates the ‘Protection Healthy’ condition. 9 user programmable LEDs are available eliminating the need for expensive panel mounted pilot lights and associated wiring. Each LED is tri-color (red, green, yellow) allowing for clear indication of the associated function’s state and has a label insert for identification. Relay Information
The device is identified by the rating label on the fascia. The user can also give the device its own identity by editing the ‘Relay Identifier’ displayed on the LCD or space is provided to place a slip in label giving the relays function.
User Interface
12 Siemens Protection Devices Limited
For full technical data refer to the Performance Specification Section of the Technical Manual.
Current Inputs
Quantity 3 x Phase & 1 x Earth or
Sensitive Earth Rated Current In 1/5A Measuring Range 80 x In Instrumentation 0.1xIn ±1% In Frequency 50/60Hz Thermal Withstand: Continuous 10 Minutes 2 Minutes 1 Second 1 Cycle
3 x In 3.5 x In 6 x In 100A (1A) 350A (5A) 700A (1A) 2500A (5A)
Burden @ In VA (1A phase and Earth element)
VA (5A phase and earth element)
Voltage Inputs
Nominal 40…160 Vrms Operating Range 0… 200 Vrms Instrumentation 0.8xVn ±1% Vn Burden @ 110V 0.06 VA Overvoltage Withstand 300 Vrms
Auxiliary Supply
Rated DC Voltage 24-250V DC
Operating Range 19.2 to 275V Allowable superimposed ac component
12% of DC voltage
Rated AC Voltage 100-230 VAC 50/60Hz Range 80 to 253 V rms AC 50/60Hz ±5%
Power Consumption:
Min (DC) Max (DC)
3.6W(6.1W with IEC61850) 8.4W (11W with IEC61850)
Min (AC) Max (AC)
9VA (14.5VA with IEC61850) 17VA (23VA with IEC61850)
Allowable breaks/dips in supply (collapse to zero)
DC 50ms AC 2.5/3 cycles
@50/60Hz
Binary Inputs
Number 3,4 or 6
Operating Voltage 19V dc DC Range 17 to 320V dc AC Range 92 to 138 VRMSAC
88V dc Range 70 to 320V dc
Maximum dc current for operation
1.5mA
Maximum peak ac current for operation
1.5mA
Pick Up Delay User Selectable 0 to 14,400,000ms (up to 4 hours)
Drop Off Delay User Selectable 0 to 14,400,000ms (up to 4 hours)
For AC operation the BI pick-up delay should be set to 0ms and the drop-off delay to 20ms. Binary Outputs
Number 5 or 8
(3 change over contacts) Operating Voltage Voltage Free Operating Mode User selectable - Self or
Hand/Electrical Reset or pulsed. Operating Time from Energizing Binary Input
<20ms
Making Capacity: Carry continuously Make and carry (L/R 40 ms and V 300 V)
5A ac or dc 20A ac or dc for 0.5s 30A ac or dc for 0.2s
Breaking Capacity ( 5 A and 300 V): AC Resistive AC Inductive DC Resistive DC Inductive
1250 VA 250 VA at p.f. 0.4 75 W 30 W at L/R 40ms 50 W at L/R 10ms
Housing E4 or E6(see dimension
drawing) Indication 20 Character 4 line Display
Relay Healthy LED 9 Tri Coloured User Programmable Self or Hand Reset LED’s
With-drawable Element Yes User Interface 5 Navigation Keys Weight Typical 3.1Kg IP Rating installed with cover
IP 51 from front
IP Rating installed without cover
IP 20 from front
Unit Design
Inputs and Outputs
Technical Data
Siemens Protection Devices Limited 13
Communication Port Front USB Type B
Rear RS485 2 wire electrical
IEC61850 optional ports: 2x Electrical RJ45 Ethernet 2x LC Fibre Optic Ethernet
Protocols IEC60870-5-103
MODBUS RTU (Serial)
DNP3.0 O (Serial)
IEC61850 - optional
Fibre Optic Ethernet Data Communication Interface (IEC 61850 Option)
EN100 Fibre Optic Data Communication Interface (IEC 61850 Option) Physical
layer Fibre-optic
Connectors Duplex LC 100BaseF in acc. With IEEE802.3
Recommended fibre 62.5/125 m glass fibre with Duplex-LC connector
Transmission Speed 100 MBits/s
Optical Wavelength 1300 nm
Bridgeable distance 2 km
EN100 Electrical Ethernet Data Communication Interface (IEC 61850 Option) Physical
Electrical
Connectors RJ45 100BaseF in acc. With IEEE802.3
Transmission Speed 100 MBits/s
Test Voltage (with regard to socket)
500 VAC 50 Hz
Bridgeable distance 20m
Fault Record 10 (5 for 7SR1102-1*A12-*AA0). Waveform Record 10 x 1sec
2 x 5sec 5 x 2sec 1 x 10sec (5x1sec, 2x2sec, 1x5sec for 7SR1102-1*A12-*AA0) Pre trigger 10…90%
Events 1000 1ms Resolution
Vibration (Sinusoidal)
IEC 60255-21-1 Class I Type Level Variation Vibration response 0.5 gn 5 % Vibration response 1.0 gn 5 %
Shock and Bump
IEC 60255-21-2 Class I Type Level Variation Shock response 5 gn, 11 ms 5 % Shock withstand 15 gn, 11 ms 5 % Bump test 10 gn, 16 ms 5 %
Seismic
IEC 60255-21-3 Class I Type Level Variation
Seismic response
X-plane - 3.5mm displacement below crossover freq (8-9Hz) 1gn and above Y-plane – 1.5mm displacement below crossover freq (8-9Hz) 0.5gn above
5 %
Mechanical Classification
Durability >106 operations
Data Communication Interface Mechanical Tests
Data Storage
14 Siemens Protection Devices Limited
Insulation
IEC 60255-5 Type Level
Between any terminal and earth
2.0 kV AC RMS for 1 min
Between independent circuits
2.0 kV AC RMS for 1 min
Across normally open contacts
1.0 kV AC RMS for 1 min
High Frequency Disturbance
IEC 60255-22-1 Class III Type Level Variation Common (longitudinal) mode
2.5 kV 5 %
Series (transverse) mode
1.0 kV 5 %
Electrostatic Discharge
IEC 60255-22-2 Type Level Variation
Front Cover Fitted Class IV,
15 kV Air Discharge
5 %
Front Cover Removed
Class III,
8 kV Air Discharge
5 %
Fast Transients
IEC 60255-22-4 Class A (2002) Type Level Variation 5/50 ns 2.5 kHz repetitive
4kV 5 %
Surge Immunity
IEC 60255-22-5 Type Level Variation
Analog Inputs: Line to Earth
4.0 kV 10%
Case, Aux Power & I/O: Line to Earth
2.0 kV 10%
RS485 Comms port: Line to Earth
1.0 kV No Data Loss
Analog Inputs: Line to Line
1.0 kV 10%
Case, Aux Power & I/O: Line to Line
1.0 kV * 10%
* Note 45ms DTL pick-up delay applied to binary inputs
Conducted Radio Frequency Interference
IEC 60255-22-6 Type Level Variation 0.15 to 80 MHz 10 V 5 %
Radiated Radio Frequency
IEC 60255-25 Type Limits at 10 m, Quasi-peak 30 to 230 MHz 40 dB( V) 230 to 10000 MHz 47 dB( V)
Conducted Radio Frequency
Type Limits
Quasi-peak Average 0.15 to 0.5 MHz 79 dB( V) 66 dB( V) 0.5 to 30 MHz 73 dB( V) 60 dB( V)
Radiated Immunity
IEC 60255-22-3 Class III Type Level 80 MHz to 1000 MHz Sweep 10 V/m
1.4GHz to 2.7GHz Sweep 10V/m
80,160,380,450,900,1850,2150 MHz Spot
10V/m
Temperature
IEC 60068-2-1/2 Operating Range -10 C to +55 C Storage range -25 C to +70 C
Humidity
IEC 60068-2-78 Operational test 56 days at 40 C and 93 %
relative humidity
Climatic Tests
Electrical Tests
Siemens Protection Devices Limited 15
27/59 Under/Over Voltage
Number of Elements 4 Under or Over Operate Any phase or All phases Voltage Guard 1,1.5…200V Setting Range Vs 5,5.5…200V Hysteresis Setting 0.0.1…80% Vs Operate Level 100% Vs, ±1% or ±0.25V Reset Level: Overvoltage Undervoltage
=(100%-hyst)xVop, ±1% =(100%+hyst)xVop, ±1%
Delay Setting td 0.00,0.01…20,20.5…100,101…1000,1010…10000,10100…14400s
Basic Operate Time : 0 to 1.1xVs 0 to 2.0xVs 1.1 to 0.5xVs
73ms ±10ms 63ms ±10ms 58ms ±10ms
Operate time following delay.
Tbasic +td , ±1% or ±10ms
Inhibited by Binary or Virtual Input VT Supervision Voltage Guard
32 Power (7SR12)
Number of Elements 2 Forward or Reverse Operate P, Q or S U/C Guard 0.05 to 1.0 x In Setting Range Ss 0.05 to 2.0 x Sn Operate Level Sop 100% Ss, ± 5% or ± 2% Sn Reset Level: - Basic Operate Time: - 1.1 x Ss (over) 2.0 x Ss (over) 0.5 x Ss (under)
60ms ± 10ms 45ms ± 10ms 30ms ± 10ms
Delay Setting td 0 to 14400s Operate time following delay.
tbasic +td , ±1% or ±10ms
Inhibited by Undercurrent Guard, VTS 32S Sensitive Power (7SR12 SEF)
Number of Elements 2 Forward or Reverse Operate P, Q or S U/C Guard 0.005 to 1.0 x In Setting Range Ss 0.005 to 2.0 x Sn Operate Level 100% Ss ± 5% or ± 2% Sn Reset Level: - Basic Operate Time: - 1.1 x Ss (over) 2.0 x Ss (over) 0.5 x Ss (under)
60ms ± 10ms 45ms ± 10ms 30ms ± 10ms
Delay Setting td 0 to 14400s Operate time following delay.
tbasic +td ± 1% or ± 10ms
Inhibited by Undercurrent Guard, VTS
37 Undercurrent
Number of Elements 2 Phase and 2 EF/SEF Operate Any phase or ALL Setting Range Is Phase and EF
0.05,0.10…5.0 x In SEF 0.005,0.010…5.0 x In
Operate Level 100% Is, ±5% or ±1%xIn Current Guard Phase 0.05,0.1…5.0 x In Delay Setting td 0.00,0.01…20,20.5…100,101…
1000,1010…10000,10100…14400s
Basic Operate Time: 1.1 to 0.5xIn
35ms ±10ms
Operate time following delay.
Tbasic +td , ±1% or ±10ms
Overshoot Time < 40ms Inhibited by Binary or Virtual Input
46 Negative Phase Sequence Overcurrent
Number of Elements DT & IT DT Setting Range Is 0.05,0.10…4.0 x In DT Operate Level 100% Is, ±5% or ±1%xIn DT Delay Setting td 0.00,0.01…20,20.5…100,101…
1000,1010…10000,10100… 14400s
DT Basic Operate Time 0 to 2 xIs 0 to 5 xIs
40ms ±10ms 30ms ±10ms
DT Operate time following delay.
Tbasic +td , ±1% or ±10ms
IT Char Setting IEC NI,VI,EI,LTI ANSI MI,VI,EI & DTL
IT Setting Range 0.05..2.5 Tm Time Multiplier 0.025,0.030…1.6,1.7…5,6…100 Char Operate Level 105% Is, ±4% or ±1%In Overshoot Time < 40ms Inhibited by Binary or Virtual Input
47 Negative Phase Sequence
Number of Elements 2 Setting Range Vs 1,1.5…90V Hysteresis Setting 0,0.1…80% Operate Level 100% Vs, ±2% or ±0.5V Delay Setting td 0.00,0.01…20,20.5…100,101…
1000,1010…10000,10100… 14400s
Basic Operate Time 0V to 1.5xVs 0V to 10xVs
80ms ±20ms 55ms ±20ms
Operate time following delay.
Tbasic +td , ±2% or ±20ms
Overshoot Time < 40ms Inhibited by Binary or Virtual Input
Performance
16 Siemens Protection Devices Limited
49 Thermal Overload Operate levels Operate and Alarm Setting Range Is 0.10,0.11…3.0 x In Operate Level 100% Is, ±5% or ±1%xIn Time Constant Setting 1,1.5…1000min Operate time
22
22
B
p
IkIII
Int
±5% absolute or ±100ms where Ip = prior current
Alarm Level Disabled, 50,51…100% Inhibited by Binary or Virtual Input
50 (67) Instantaneous & DTL OC&EF (Directional)
Operation – 7SR12 only Non directional, Forward or
reverse Elements Phase, Derived Earth, Measured
Earth & SEF Number of Elements 2 x 7SR11 4 x 7SR12
2/4 x OC 2/4 x Derived EF ‘N’ 2/4 x Measured EF ‘G’ where fitted 2/4 x SEF where fitted
Setting Range Is
0.05,0.06…50 x In SEF 0.005…5 x In
Time Delay 0.00…14400s Operate Level Iop 100% Is, ±5% or ±1%xIn
Reset level 95 % Iop
Operate time: 50 50N
0 to 2xIs – 35ms, ±10ms, 0 to 5xIs – 25ms, ±10ms 0 to 2xIs – 40ms, ±10ms, 0 to 5xIs – 30ms, ±10ms
Operate time following delay
Tbasic +td , ±1% or ±10ms
Inhibited by Binary or Virtual Input Inrush detector VT Supervision
51(67) Time Delayed OC&EF (Directional)
Operation – 7SR12 only Non directional, Forward or
reverse Elements Phase, Derived Earth, Measured
Earth & SEF Number of Elements 2 x 7SR11 4 x 7SR12
2/4 x OC 2/4 x Derived EF ‘N’ 2/4 x Measured EF ‘G’ 2/4 x SEF where fitted
Characteristic IEC NI,VI,EI,LTI ANSI MI,VI,EI & DTL
Setting Range Is 0.05,0.06…2.5 x In SEF 0.005…0.5 x In
Time Multiplier 0.025,0.030…1.6,1.7…5,6...100 Time Delay 0,0.01… 20s Operate Level 105% Is, ±4% or ±1%xIn Minimum Operate time IEC ANSI
TmKtIsIop 1
TmBAt P
IsIop 1
5 % absolute or 30 ms
Follower Delay 0 - 20s Reset ANSI decaying, 0 – 60s Inhibited by Binary or Virtual Input
Inrush detector VT Supervision
51V Voltage Controlled Overcurrent
Setting Range 5,5.5…200V Operate Level 100% Vs, ±5% or ±1%xVn Multiplier 0.25.0.3…1 x 51Is Inhibited by VT Supervision
50AFD Arc Flash Detector
Number of Zones 6, segregated outputs with and
without current supervision. Setting Range Is 1,2…10 x In Operate Level Iop 100% Is, ±5% or ±1%xIn
Reset level 95 % Iop
Operate time:
50AFD Overcurrent <16ms AFD Zone Operate Time <25ms
50BF Circuit Breaker Fail
Operation Current check - Phase and
Measured Earth with independent settings Mechanical Trip CB Faulty Monitor
Setting Range Is 0.05,0.055…2.0 x In 2 Stage Time Delays Timer 1 20…60000ms
Timer 2 20…60000ms Operate Level 100% Is, ±5% or ±1%xIn Disengaging time < 20ms Operate time following delay
Tcbf ±1% or ±2ms
Triggered by Any function mapped as trip contact.
Inhibited by Binary/Virtual Input Timer By pass Yes, 50BF CB Faulty Input
55 Power factor (7SR12)
Number of Elements 2 Operation Under or Over,
Lead or Lag U/C Guard 0.05 to 1.0 Setting Range PFs 0.05 to 0.99 Time Delays 0 to 14400s Operate Level ± 0.05 Basic Operate time 70ms Operate time following delay
tbasic +td ± 1% or ± 10ms
Inhibited by Undercurrent Guard, VTS
Siemens Protection Devices Limited 17
59N Neutral Voltage Displacement
Number of Elements DT & IT DT Setting Range Is 1…100V DT Operate Level 100% Vs, ±2% or ±0.5V DT Delay Setting td 0 …14400s DT Basic Operate Time 0V to 1.5 x Vs 0V to 10 x Vs
76ms ±20ms 63ms ±20ms
DT Operate time following delay.
Tbasic +td , ±1% or ±20ms
IT Char Setting IDMTL & DTL IT Setting Range 1…100V Tm Time Multiplier(IDMT)
0.1…140
Delay (DTL) 0…20s Reset ANSI Decaying, 0…60s Char Operate Level 105% Vs, ±2% or ±0.5V Inhibited by Binary or Virtual Input
60 Supervision CT 7SR11 Current
7SR12 Current or Vnps & Inps VT nps/zps
64H Restricted Earth Fault
Setting Range SEF input
0.005, 0.006 … 0.100, 0.105 … 0.950 xIn
EF input 0.05, 0.055... 0.95 xIn
Operate Level 100% Is, ±5% or ±1%xIn Time Delay 0.00… 14400s Basic Operate Time 0 to 2 xIs 45ms ±10ms
0 to 5 xIs 35ms ±10ms Inhibited by Binary or Virtual Input
74T/CC Trip/Close Circuit Supervision
Number of supervisable circuits
3 x Trip and 3 x Close
Number of BI’s Required 1 or 2 per function 79 AutoReclose
Operating Mode Phase, Earth, SEF External Number of Reclosures 4 Number of Trips 5 Dead Time 0…14400 Reclaim Time 0…600 Lockout Reset CB, Timer & BI
81 Under/Over Frequency
Number of Elements 4 Under or Over Under Voltage Guard Yes/No Setting Range Hz 43,43.01…68Hz Hysteresis Setting 0, 0.1… 2% Operate Level 100% Fs ±10mHz Operate Time Typical <150ms Vs Operate Delay 0…14400s
Control Functions
CB Open/Close Inst Prot IN/OUT EF IN/OUT SEF IN/OUT Hot Line IN/OUT Relay Mode Local/Remote/Local or Remote Reset LED’s & O/P’s
Not available in 7SR1102-1*A12-*AA0 CB Maintenance
Trip Counter Total & Delta
0…10000 Counts to AR Block 0…10000 Frequent Operations 0…10000 I2t Alarm 10…100000
18 Siemens Protection Devices Limited
E4PANEL CUT-
OUT
78
98.5
10.25
SIDE VIEW
31 216.5
25mm MIN CLEARANCE FOR TERMINAL WIRING
FRONTVIEW
103.511Case Earthconnection
Typicalwhenfitted
Diameter 3.6 - 4 holes (see note)
NOTE:THE 3.6 HOLES ARE FOR M4 THREAD FORMING (TRILOBULAR) SCREWS.THESE ARE SUPPLIED AS STANDARD AND ARE SUITABLE FOR USE IN FERROUS / ALUMINIUM PANELS 1.6mm THICK AND ABOVE. FOR OTHER PANELS, HOLES TO BE M4 CLEARANCE (TYPICALLY 4.5 DIAMETER) ANDRELAYS MOUNTED USING M4 MACHINE SCREWS, NUTS AND LOCKWASHERS (SUPPLIED IN PANEL FIXING KIT).
Fig 18. E4 Case Dimensions
TOP VIEW
FRONT
NOTE:THE 3.6 HOLES ARE FOR M4 THREAD FORMING (TRILOBULAR) SCREWS. THESE ARE SUPPLIED AS STANDARD AND ARE SUITABLE FOR USE IN FERROUS / ALUMINIUM PANELS 1.6mm THICK AND ABOVE. FOR OTHER PANELS, HOLES TO BE M4 CLEARANCE (TYPICALLY 4.5DIAMETER) AND RELAYS MOUNTED USING M4 MACHINE SCREWS, NUTS AND LOCKWASHERS (SUPPLIED IN PANEL FIXING KIT).
PANEL CUT-OUT
130
150
10
Diameter 3.6 - 4 holes (see note)
FRONT VIEW
155.5
SIDE VIEW
31 216.511Case Earthconnection
Typicalwhenfitted
MINIMUM CLEARANCES:25mm FOR TERMINAL WIRING75mm FOR ETHERNET COMMS MODULE
Fig 19. E6 Case Dimensions
Case Dimensions
Siemens Protection Devices Limited 19
BO 1
GND.
BI 1
A
Screen
B
Term.
+ve
-ve
+ve
-ve
IL1
22
24
28
2
4
BI 2+ve
-ve
6
8
BI 3+ve
-ve
10
12
14
16
18
20
IL2
IL3
IL4
25
26
27
28
BO 2 6
5
4
1
2
3
BO 38
7
BO 410
9
BO 512
11
1A
5A
13
14
15
16
1A
5A
17
18
19
20
1A
5A
21
22
23
24
1A
5A
AB
1 2
27 28
1 2
27 28
A
B
Shows contacts internal to relay case assembly.Contacts close when the relay chassis is withdrawn from case
NOTES
BI = Binary InputBO = Binary Output
Rear ViewArrangement of terminals and modules
BI 4+ve 3
BI 5+ve
5
BI 6
+ve
-ve
7
1
BO 7
11
13
BO 8 15
9
BO 6
IEC61850Data
Comms(Optional)
BI 4+ve
3
-ve 1
15
13
BO 8
11
9
BO 7
7
5
BO 6
Alternative 4BI+8BO without common terminals
B
Fig20. Diagram showing 7SR11 relay with 4 CT inputs, up to 6 binary inputs and 8 binary outputs.
7SR11 Connection Diagram
20 Siemens Protection Devices Limited
BO 1
GND.
BI 1
A
Screen
B
Term.
+ve
-ve
+ve
-ve
IL1
22
24
28
2
4
BI 2+ve
-ve
6
8
BI 3+ve
-ve
10
12
14
16
18
20
IL2
IL3
IL4
25
26
27
28
BI 4+ve
3
BI 5+ve 5
BI 6
+ve
-ve
7
1
BO 2 6
5
4
1
2
3
BO 38
7
BO 7
11
13
BO 8 15
9
BO 410
9
BO 512
11
1A
5A
13
14
15
16
1A
5A
17
18
19
20
1A
5A
21
22
23
24
1A
5A
AB
1 2
27 28
1 2
27 28
A
BO 6
V117
19
V221
23
V325
27
Rear ViewArrangement of terminals and modules
Shows contacts internal to relay case assembly.Contacts close when the relay chassis is withdrawn from case
NOTES
BI = Binary InputBO = Binary Output
BIEC61850
Data Comms
(Optional)
BI 4+ve 3
-ve 1
15
13
BO 8
11
9
BO 7
7
5
BO 6
Alternative 4BI+8BO without common terminals
B
Fig21. Diagram showing 7SR12 relay with 4 CT inputs, 3 VT inputs, up to 6 binary inputs and 8 binary outputs.
7SR12 Connection Diagram
Siemens Protection Devices Limited 21
Product description Variants Order No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Nondirectional O/C Relay (Argus) 7 S R 1 1 0 - A - A 0
Overcurrent and earth faultProtection relay
Protection ProductOvercurrent – Non Directional 1
Housing I/O and Fascia1 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 1 1 C4 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 2 A/C/D4 CT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs 3 C/D4 CT, 4 Binary Inputs / 8 Binary Outputs, 10 LEDs 7) 7 C/D
Measuring Input1/5 A, 50/60Hz1) 1 A/C/D1/5 A, 50/60Hz with SEF Input 2) 3 C/D
Auxiliary voltagePSU Rated: 24-250V DC / 100-230V AC. BI threshold 19V DC (Rated: 24-250V DC / 100-120V AC) MPSU Rated: 24-250V DC / 100-230V AC. BI threshold 88V DC (Rated: 110-250V DC) N
Communication InterfaceStandard version – included in all models, USB front port, RS485 rear port (E4 Case) 1 2Standard version – plus additional rear electrical Ethernet RJ45 (x2), E6 Case 6) 7 7 C/DStandard version – plus additional rear optical Ethernet duplex (x2), E6 Case 6 ) 8 7 C/D
ProtocolIEC 60870-5-103 Modbus RTU and DNP3 (user selectable) 2IEC 60870-5-103 Modbus RTU, DNP3 and IEC 61850 (user selectable settings) 6) 7
Relay CoverStandard Version – No Push Buttons 1Push Buttons – Down and Right Arrows 2
Protection Function PackagesBasic version 5) A46BC3) Broken conductor/load unbalance503) Instantaneous phase fault overcurrent50BF3) Circuit breaker fail50G/50N Instantaneous earth fault513) Time delayed phase fault overcurrent51G/51N Time delayed earth fault60CTS3) CT Supervision64H High impedance REF74T&C Trip & Close circuit supervision86 Hand reset contacts
Standard version C37 Undercurrent46BC3) Broken conductor/load unbalance46NPS3) Negative phase sequence overcurrent493) Thermal overload503) Instantaneous phase fault overcurrent50AFD Arc Flash Detection50BF3) Circuit breaker fail50G/50N Instantaneous earth fault50SEF2) Instantaneous sensitive earth fault513) Time delayed phase fault overcurrent51G/51N Time delayed earth fault51SEF2) Time delayed sensitive earth fault60CT3) CT Supervision64H High Impedance REF74T/CC Trip and Close circuit supervision81HBL24) 2nd harmonic block/inrush restraint51C3) Cold load pickup86 Hand reset contacts
Programmable logic
(continued on next page)
Ordering Information – 7SR11 Argus Non-Directional Overcurrent
22 Siemens Protection Devices Limited
Product description Variants Order No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Nondirectional O/C Relay (Argus) 7 S R 1 1 0 - A - A 0
continued from previous page
Standard version – plus D79 Autoreclose
Additional Functionality
No Additional Functionality A
1) 4CT is configured as 3PF + EF2) 4CT is configured as 3PF + SEF/REF.3) Functions only available in 4CT relay4) Not available on SEF input5) Protection function package ordering option A is only available on hardware variant 7SR1102-1XA12-XAA0- 4CT 3BI 5BO6) E4 case is standard, E6 case is required if IEC61850 model ordered7) 4 Binary Input variant provides segregated Binary Outputs without a common terminal
Ordering Information – 7SR11 Argus Non-Directional Overcurrent
Siemens Protection Devices Limited 23
Product description Variants Order No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Directional O/C Relay (Argus)
7 S R 1 2 0 - A - A 0
Directional overcurrent and earth fault protection relay
Protection Product Overcurrent – Directional 2
Housing I/O and Fascia1 CT, 3 VT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 4 1 C4 CT, 3 VT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 54 CT, 3 VT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs 64 CT, 3 VT, 4 Binary Inputs / 8 Binary Outputs, 10 LEDs 6) 8
Measuring Input1/5 A, 40 to 160 V, 50/60Hz1) 21/5 A, 40 to 160 V, 50/60Hz with SEF Input2) 4
Auxiliary voltagePSU Rated: 24-250V DC / 100-230V AC. BI threshold 19V DC (Rated: 24-250V DC / 100-120V AC) MPSU Rated: 24-250V DC / 100-230V AC. BI threshold 88V DC (Rated: 110-250V DC) N
Communication InterfaceStandard version – included in all models, USB front port, RS485 rear port (E4 Case) 1 2Standard version – plus additional rear electrical Ethernet RJ45 (x2), E6 Case 5) 7 7Standard version – plus additional rear optical Ethernet duplex (x2), E6 Case 5 ) 8 7
ProtocolIEC 60870-5-103, Modbus RTU and DNP3 (user selectable) 2IEC 60870-5-103 Modbus RTU, DNP3 and IEC 61850 (user selectable settings) 5) 7
Relay CoverStandard Version – No Push Buttons 1Push Buttons – Down and Right Arrows 2
Protection Function PackagesStandard version – Included in all models C27/59 Under/overvoltage323) Power32S7) Sensitive Power37 Undercurrent46BC3) Broken conductor/load unbalance46NPS3) Negative phase sequence overcurrent47 Negative phase sequence voltage493) Thermal overload50AFD Arc Flash Detection50BF3) Circuit breaker fail51V3) Voltage controlled overcurrent553) Power Factor59N Neutral voltage displacement60CTS3) CT supervision60VTS3) VT supervision64H High Impedance REF67/50 Directional instantaneous phase fault overcurrent67/50G 67/50N Directional instantaneous earth fault67/50SEF2) Instantaneous sensitive earth fault67/51 Directional time delayed phase fault overcurrent67/51G 67/51N Directional time delayed earth fault67/51/SEF2) Time delayed sensitive earth fault81HBL24) 2nd harmonic block/inrush restraint74T/CC Trip & Close circuit supervision51C3) Cold load pickup81U/0 Under/Over Frequency 86 Hand reset contacts Programmable logic
Standard version – plus D79 Autoreclose
Additional Functionality
No Additional Functionality A
1) 4CT is configured as 3PF + EF 2) 4CT is configured as 3PF + SEF/REF 3) Functions only available in 4CT relay 4) Not available on SEF input 5) E4 case is standard, E6 case is required if IEC61850 model ordered 6) 4 Binary Input variant provides segregated Binary Outputs without a common terminal 7) Functions only available in 4CT SEF relay
Ordering Information – 7SR12 Argus Directional Overcurrent